CSS overflow property

http://fadedme.kebohosting.com/default.asp

In the Journal area I'm using the overflow property, which is set to auto so that when the content overflows the element the browser will create a scroll bar. In IE it only creates a vertical scroll bar, but Firefox creates a horizontal one too. I don't want the horizontal one to be there, as the content isn't overflowing horizontally. With the previous font size I was using it didn't create one, but when I changed the font size it did (I don't want to change the font size back). I tried adding padding inside the element, but that didn't have any effect. Any idea how I can prod Firefox to render it correctly? CSS doesn't have any way to manually choose which bars appear, you can only have it set to both on, both off, or auto.

thanks,
ian